火焰退火制备Bi2WO6/NiO光阳极及其光电性能
Synthesis of Bi2WO6/NiO photoanode via flame annealing and PEC performance evolution
崔亚楠 1许华梅1
作者信息
- 1. 哈尔滨师范大学物理与电子工程学院,黑龙江 哈尔滨 150025
- 折叠
摘要
为解决逐渐严重的能源和环境问题,光电化学(PEC)水分解技术作为一种极具潜力的利用太阳能分解水的制氢技术,得到了广泛的研究.采用简单的旋涂退火法成功制备了 Bi2WO6/NiO复合材料,在0.5 MNa2 SO4电解液中,火焰退火制备的Bi2WO6/NiO光阳极的光电流在1.23 VRHE下达到0.04 mA/cm2,是仅由Bi2WO6薄膜产生的光电流密度的4倍左右,展现出了良好的光电催化活性和较好的稳定性.实验表明,Bi2WO6/NiO复合材料的形成提高了对太阳光的利用率,有效地抑制了光生载流子的复合,促进界面电荷转移过程.
Abstract
To help ease the increasingly serious energy crisis and environmental pollution,photoelectrochemical(PEC)water splitting,as a highly promising technology using solar energy,has received widespread research attention.First,Bi2WO6/NiO composite was successfully prepared by a simple spinning annealing method.Compared with the use of pure Bi2WO6,the water oxidation performance of Bi2WO6/NiO photoanode prepared by flame annealing is improved by fourfold.And the best photocurrent reaches 0.04 mA/cm2@1.23 VRHE in 0.5 M Na2SO4,showing an excellent photocatalytic activity and stability.The results show that the formation of Bi2WO6/NiO photoanode can improve the utilization of sunlight,effec-tively inhibit the carrier recombination,and boost charge transfer performance.
关键词
Bi2WO6/光阳极/光电化学/火焰退火Key words
Bi2WO6/photoanode/PEC/flame annealing引用本文复制引用
基金项目
黑龙江省科技厅联合引导项目(LH2021E092)
出版年
2024
NETL
NSTL
万方数据